K&F Concept Square IR ND8 Filter 0.9 (3 Stops) 100 X mm HD Neutral Density Waterproof Optical Glass with Nano Coating Technology for Camera Lens

【ND8 Square Filter】100x100mm square shape, product weight 47g, lens thickness 2mm, suitable for lens diameter 82mm and lower. ND8 neutral density allows 12.5% light transmission, provides 3-stop brightness stabiblisation, promoting longer exposure time, and the creation of directional blur in low light. 【Polishing Technology】 Both sides are ground and polished to balance the light penetration path so as not to affect the image quality. 【Waterproof】Multi-layer coatings technology - Double-sided water repellent (for ease of maintenance), reduces unwanted reflections on the filter surface (flares) without loss of sharpness. 【Prevent Overexposure】 If the light is too bright, it is difficult to choose a slower shutter speed. Use the ND mirror to reduce the light entering the lens and use a slower shutter. 【Protection】The outer edge of the filter bag is made of leather and the thin sponge serves to protect the filter.